RE: tuning by sandpaper
Thanks a lot for so detail ansver.Probably I will restrain to do it by myself.
I have another question.I am intermediate windsurfer ,but use to be
pro skier.In the pro ski area, impossible to imagine whithout special
wax and powders,which can dramaticaly reduse friction,especialy on a wat snow(more then 50%).
Is there something iqual in pro windsurfing?
Thanks a lot .